ifc-properties 0.2.1

Property sets, quantities, and unit resolution. No geometry.
Documentation
# ifc-properties template plan

Status: planned under `PROP-TEMPLATE`. Last updated: 2026-08-19.
Follow `AGENTS.md`; claim one task and record blockers/decisions beneath it.

## Work queue

- [ ] `TMPL-SET` - set templates
  - Proof: view/invalid/cycle tests plus crate clippy.
- [ ] `TMPL-PROP` - property/quantity templates
  - Proof: view/invalid/cycle tests plus crate clippy.
- [ ] `TMPL-REL` - applicability and template assignment
  - Proof: view/invalid/cycle tests plus crate clippy.
- [ ] `TMPL-CHECK` - declared-vs-actual form diagnostics
  - Proof: view/invalid/cycle tests plus crate clippy.

## Completion log

Append `TASK-ID - proof - material decision`; no long logs.